Lab 4: Titration of a Redox Reaction The purpose of this experiment is to standardize a solution of Mohr’s salt, and to use titration to determine the volume ration of ferrous solution to the permanganate standard and calculate the concentration of the ferrous solution. First, Mohr’s salt was mixed with H2S04. Then, the solution was titrated until the end point was reached. The volumes were recorded, and used to calculate the molarity of the ferrous solution. The major findings in this lab were that titration in a redox reaction an be used to find the concentration of one solution if the other one is given.

This lab’s significance is that it shows the proper way to calculate molarities using titrations. The major conclusions show that molarity of an unknown substance can be reached by titrating it with another substance, with a known molarity. Purpose: To standardize a solution of Mohr’s salt. To use titration to determine the volume ratio of ferrous solution to the permanganate standard and to calculate the concentration of the ferrous solution. Materials: . 020M potassium permanganate solution

If I could redo the experiment, I would atch carefully at the solutions, making sure no more or less was being used. Conclusions: From this experiment, I conclude that titrations are a valid way of determining the molarity of an unknown substance, because you can accurately calculate the molarity using another substance of a known molarity. I also discovered that an acid- base titration has different mole ratios that a redox titration. Discussion: 1. a. Permanganate was a purple color. b. H2S04 was a lighter purple color. c. Ferrous was greenish- yellow. d. Manganese was pink. The indicator was 2.

TermDefinition Water Uses Household purposes, agriculture, industry, transportation, and recreation. Irrigation The process of supplying water to areas of land to make them suitable for growing crops. Water & Living Water is essential for living things to grow, reproduce, and carry out other important process. Photosynthesis Plants making food from using the energy in the sun, water, and carbon dioxide(CO2). Water distribution 97% salt water, 3 % fresh water. Water vapor Gaseous form of water. Groundwater Water that fills the cracks and spaces in underground soil and rock layers. Polar molecule A molecule that has electrically charged areas; for example:...

Introduction Background Indicators are used in acid-base titrations to determine end points as both acid and base are colourless in nature. However, indicators chosen must be suitable according to the type of reactions such as: - Strong acid-weak base titration - Weak acid-strong base titration - Strong acid-strong base titration - Weak acid-weak base titration Only the first two mentioned above will be investigated in this experiment. Aims/Objectives 1. To understand to importance of selecting suitable indicators for detecting the end-points of acid-base titrations. . To obtain titration curves for: a. Strong acid-weak base titration b. Weak acid-strong base titration...

IntroductionWater that has non been purified is what is known as `` difficult H2O. '' Difficult H2O can incorporate substances like Ca2+ , Mg2+ , and Fe2+ . These `` difficult ions '' are non ever unhealthy needfully, but there are several good grounds that we take them. First, they can unite with other compounds to organize soap trash. Second, it can take to the buildup of graduated table in pipes which may necessitate dearly-won fixs. Finally, the graduated table and soap trash will take to more expensive energy measures and more fixs needed in the long tally. ( Dean,...

4.1INTRODUCTIONCalcium carbonate, CaCO3, is found in nature giving hardness and strength to things such as seashells, stones, and eggshells. Equally difficult as this substance is, it will respond readily with hydrochloric acid to give C dioxide gas ( and two other merchandises ) . In this experiment pupils will plan an experiment by responding eggshells with 2 M HCl to compare the Ca carbonate composing of white ( poulet ) eggshells to brown eggshells.A good quality eggshell will incorporate, on norm, 2.2 gms of Ca in the signifier of Ca carbonate. Approximately 94 % of a dry eggshell is calcium...

Chemistry report : experiment 2 Analytical methods in determining the water content of a given hydrated salt. Objective : to determine the weight of water,h20 in a given hydrated salt using of analytical balance. Problem statement : 1. What it the weight of water in hydrated salt? 3. 2. do really water exist in a hydrated salt? Introduction : A hydrate salt is build of anions which is a known as negative ions(-), and cations which is known as positive ions (+), where it is surrounded by and also eakly bonded with water molecules. A fixed number of water molecules...

Abstract The purpose of this lab was to study the composition of hydrates. Hydrates are ionic compounds that are chemical compositions made of water and salt. A main objective was to remove water from the hydrate by heating, and determine the amount of water that was in the hydrate. After doing this, one had to predict the empirical formula for hydrated copper sulfate. In doing this lab, one was able to see the gradual change in the composition of a hydrate into an anhydrous salt. The lab was carried out with numerous steps. First, one had to safely prepare by...

Extraction of Caffeine from Tea Leaves Introduction Caffeine is soluble in boiling water and as a result it is easily extracted from tea bags by steeping in hot water. This process leaves behind the water insoluble portions of the tea bag. However, water extracts more than just caffeine, so a final separation is done with an organic solvent that will dissolve primarily caffeine. The organic solvent used in this experiment is Dichloromethane (CH? Cl? ). Dichloromethane is less polar than water and this difference in polarity allows the separation. Extraction of the tea with the Dichloromethane, followed by evaporation of...

Chemistry Lab Report (Design) Factors affecting Rates of a Reaction (Kinetics) KINETICS DESIGN LAB Research Question: Does the concentration of Potassium Iodide (KI) affect the rate of its reaction with hydrogen peroxide (H202) (of a fixed concentration)? Introduction: There are several factors that affect the rate of a reaction. Some of them being Pressure (if the reactants are Gases), Temperature, Presence of a Catalyst, Surface Area of the reactant, and Concentration. According to the Collision Theory, during a eaction, particles collide with each other and react if the geometry of the collision is correct. In this Experiment, we will investigate...

A 1. 000g sample of unknown analyzed by Reaction 7-2 gave 2. 500g of Bi ( dimethylglyoximate ) Ni ( II ) . Find the wt % of Ni in the unknown. 7-8 ) The adult male in the VAT. Once upon a clip. a workingman at a dye mill fell into a VAT incorporating a hot concentrated mixture of sulphuric and azotic acids. and he dissolved! Because cipher witnessed the accident. it was necessary to turn out that he fell in so that the man’s married woman could roll up his insurance money. The adult male weighed 70kg. and...

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Lab 4: Titration of a Redox Reaction The purpose of this experiment is to standardize a solution of Mohr's salt, and to use titration to determine the volume ration of ferrous solution to the permanganate standard and calculate the concentration of the ferrous solution. First, Mohr's salt was mixed with H2S04. Then, the solution was titrated until the end point was reached. The volumes were recorded, and used to calculate the molarity of the ferrous solution. The major findings in this lab we